Tool for dressing emery-wheels



(No Model.)

A. E. GONYVBRS.

TOOL POR .DRESSING EMBRY WHEELS.l

No. 362,360. Patented May 3, 1887'.

NA PETERS. Phnmulhngnpher, wnhlngian, D.;A

NITED STATES PATENT FFIC.

ALBERT n. conviens, or TAUNTON, MASSACHUSETTS.

Tool. Foa DRESSING EMERYwHEl-:La

SPECIFICATION forming part of Letters Patent No. 362,360. dated May 3, 1887i Application tiled May 3, 1886-. Renewed February 24, 1587. Serial No.228,7i10.

To all whom it may concern.-

Be it known that I, ALBERT E. CoNvERs, of Taunton, in the county of Bristol and State of Massachusetts, have invented a new and improved tool for Dressing Emery-Wheels Used in the Manufacture of rlacks, of which the following is a specification.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure 1 is a plan view of a grinding-tool embodying myinvention. Fig. 2 is a perspective view of the same. Fig. 3 is a similar view of the same in operation upon an emery-*wheeh In the art of tack-making emery-wheels are used whose sides next their peripheries are ground away so as to form beads,7 by means of which said wheels are made of suitable shape to form, by grinding, scores in dies for the purpose of shaping the tacks next below their heads.

It is the object of this invention to produce a grinding-tool whereby these beads may be finished (after preliminary grinding by a less accurate tool) of even thickness throughout u their circumference and width.

A represents the handle, usually made of convenient shape to be held in a machine.

B is la stationary jaw integral with the handle A.

C is a movable jaw, pivoted at D to the stationary jaw B and held normally away from it by the spring E, secured to the jaw B.

,y F is a screw, of which Fis the head, passing through the jaw C and screwing into the jaw B, which is threaded for the purpose. Both jaws are provided with diamonds e e. By Setting the screw at a desired point and im parting rotation to the emery-wheel, the grind- (No model.)

ing-tool will reduce the thick ness of said wheel for its entire circumference, and then, by imparting longitudinal motion to the tool-that is, motion radially with the wheel-a bead will be formed next its periphery of even thickness v is used for finishing the bead as regards its thickness, while a less exact tool is used for roughly preparing it. A set-nut, H, although not theoretically necessary, is usually provided for the purpose of preventing any possible play or looseness.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. The herein-described improved tool for grinding emery-wheels,consisting,essentially, of the handle A, stationary jaw B, movable jaw C, screw F, passing through the jaw C and screwing into the jaw B, and spring E, said jaws being provided with diamonds e, substantially as and for the purpose set forth.

2. ln a tool for grinding emerywheels, jaws whose inner surfaces are provided with diamonds placed opposite each other, one on each of the said inner surfaces and near the outer ends of the jaws, said jaws being relatively ad justable by means of a screw located in said jaws, substantially as and for the purpose described.

ALBERT E. CONVEBS.

Vitnesses:

HENRY W. WILLIAMS, J. M..HARTNETT. 

